East EA900RT 1kVA-10kVA Rackmount UPS
East EA900RT 1kVA-10kVA Rack/Tower Dual Conversion Online High-Frequency UPS (2U/3U)
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East EA900RT 3kVA
HEFENGQI East EA900RT 3kVA Rackmount Online UPS (3kVA/2.7kW 2U)
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East EA990 120kVA
HEFENGQI East EA990 120kVA Modular High-Frequency Datacenter UPS (120kVA/120kW PF 1.0)
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Envicool CyberMate DC300W Cabinet Air Conditioner
Envicool CyberMate DC300W -48V DC 300W Compact Outdoor Telecom Cabinet Air Conditioner (450×280×160mm IP55)
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Geist PDU
Vertiv Geist PDU Data Center Intelligent Rack Power Distribution Unit (Monitored/Switched)
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HPL 48V Lithium Battery System
Vertiv HPL 48V Smart High-Rate LiFePO4 Telecom Energy Storage Battery System (48V 100Ah / 5.12kWh)
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Engineering Guide: Telecom Rectifier Gold Finger Pinout, Standalone Jumpers, and CAN Bus Voltage Tuning
A comprehensive technical breakdown of 48V/50A rectifier modules (Huawei R4850G2 / ETP48400 architecture), covering blind-mate connector pinouts, standalone startup jumpers, CAN 2.0B hex commands for CV/CC adjustment, and active current sharing troubleshooting.
Huawei 100G QSFP28 LR4 Optical Transceiver: Cleaning Procedure, Optical Power Testing & Troubleshooting Guide
A comprehensive hands-on engineering guide to Huawei 100G QSFP28 LR4 optical transceivers. Covers fiber end-face inspection and dry/wet cleaning protocols, DDM optical power measurement limits, and step-by-step troubleshooting for multi-vendor switch interoperability.
Huawei R4850G2 Rectifier Pinout Definition, Standalone Startup & 53.5V Wiring Guide
A comprehensive practical guide for field telecom engineers: deciphering the gold-finger backplane pinout of Huawei R4850G2 (50A/3000W), standalone offline startup without controller, CAN bus voltage adjustment, and safety precautions.
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